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a "Negative or poor" refers to household incomes below the Federal poverty line; "near poor/low income", over the poverty line to just below 200 percent of the poverty line; "middle income", 200 percent to just below 400 percent of the poverty line; and "high income", 400 percent of the poverty line and over.

bSee the MEPS entry in the Data Sources section of the Measures Specifications Appendix for more information.